Results 21 to 30 of about 737,390 (249)
An equivalent metal ion in one- and two-metal-ion catalysis [PDF]
Nature Structural & Molecular Biology, 2008 Nucleotidyl-transfer enzymes, which synthesize, degrade and rearrange DNA and RNA, often depend on metal ions for catalysis. All DNA and RNA polymerases, MutH-like or RNase H-like nucleases and recombinases, and group I introns seem to require two divalent cations to form a complete active site.
openaire +2 more sources
Water Soluble Cationic Porphyrin Sensor for Detection of Hg2+, Pb2+, Cd2+, and Cu2+ [PDF]
, 2016 Here we report the sensing properties of the aqueous solution of mesotetra(N-methyl-4-pyridyl)porphine tetrachloride (1) for simultaneous detection of toxic metal ions by using UV-vis spectroscopy.
Orr, Christopher +2 more
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Biofibrous nanomaterials for extracting strategic metal ions from water
Exploration, 2022 Strategic metals play an indispensable role in the related industries. Their extraction and recovery from water are of great significance due to both their rapid consumption and environmental concern.
Weihua Zhang +6 more
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Cogent Engineering, 2022 The efficiency of the AC-magnetic field usage for resource-saving activation of the reaction mixture in the ferritization process with the extraction of heavy metals ions from galvanic waste has been confirmed.
Dmitry Samchenko +3 more
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Electrochemical Studies for Cation Recognition with Diazo-Coupled Calix[4]arenes
Journal of Analytical Methods in Chemistry, 2015 The electrochemical properties of diazophenylcalix[4]arenes bearing ortho-carboxyl group (o-CAC) and ortho-ester group (o-EAC), respectively, in the presence of various metal ions were investigated by voltammetry in CH3CN.
Bongsu Kim, Tae Hyun Kim
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Adsorption of Mixtures of Toxic Metal Ions Using Non-Viable Cells of
Adsorption Science & Technology, 2012 The use of waste biomaterial for the adsorption of heavy metal ions is an economically appealing alternative to conventional metal ion removal methods. In the present work, S. cerevisiae biomass has been shown to be capable of the simultaneous removal of
Shahram Amirnia +2 more
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Chemosensors, 2023 Metal ions play a crucial role in many biochemical processes, and when in a state of scarcity or surplus, they can lead to various diseases. Therefore, the development of a selective, sensitive, cost-effective, and fast-responding sensor to detect metal ...
Yang Shi +3 more
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Adsorption Science & Technology, 2002 Certain industries often produce mixtures of heavy metal ions in their waste products. Because of the nature of heavy metal ions and the adsorption process, such metal ions can compete with each other for the sorption sites on an adsorbent during ...
Sameer Al-Asheh +2 more
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Highly efficient removal of trace metal ions by using poly(acrylic acid) hydrogel adsorbent
Materials & Design, 2019 Hydrogels as metal ions adsorbents are commonly applied in wastewater treatment field. However, low swelling ratio (SR) of ever reported hydrogel adsorbents prevents adsorptive sites from effectively exposing to metal ions, leading to unpleasant removal ...
Qingyun Lv +5 more
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Yankuang ceshi, 2023 BACKGROUND Nano-titanium dioxide (nTiO2) is widely used to remove heavy metals from water. Phosphate, a common inorganic anion in the aquatic environment, can affect the adsorption characteristics of heavy metal ions on nTiO2.
LI Yanxiang +6 more
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